Electric motor and electric compressor with improved housing and stator
US7538468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2007 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Jul 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A housing of an electric motor includes an inner circumferential surface, which includes recesses arranged along the circumferential direction. On an outer circumferential surface of a stator core of a stator are provided protrusions arranged along the circumferential direction. Fitting each protrusion to the corresponding recess fixes the stator core to the housing. A rotor is provided radially inward of the stator. In a state where each protrusion is fitted to the corresponding recess, a pair of side surfaces of each protrusion are retained by a pair of inner side surfaces of the corresponding recess in the circumferential direction of the housing. A gap is formed between an end face of each protrusion and an inner bottom surface of the corresponding recess facing the end face along the entire surface of the end face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.